locktorture: Make statistics generic
locktorture: Make statistics generic

The statistics structure can serve well for both reader and writer
locks, thus simply rename some fields that mention 'write' and leave
the declaration of lwsa.

Signed-off-by: Davidlohr Bueso <004a7ec0459a12f8239e6a658beae4a155e8573d@suse.de>
Signed-off-by: Paul E. McKenney <1e0ce936bb9b355d257bf5790d2513c3f28be22b@linux.vnet.ibm.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs